122897240 has 16 divisors (see below), whose sum is σ = 276518880. Its totient is φ = 49158880.

The previous prime is 122897197. The next prime is 122897251. The reversal of 122897240 is 42798221.

It is a self number, because there is not a number n which added to its sum of digits gives 122897240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1536176 + ... + 1536255.

It is an arithmetic number, because the mean of its divisors is an integer number (17282430).

Almost surely, 2^122897240 is an apocalyptic number.

122897240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122897240 is an abundant number, since it is smaller than the sum of its proper divisors (153621640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122897240 is a wasteful number, since it uses less digits than its factorization.

122897240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072442 (or 3072438 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 122897240 is about 11085.9027598117. The cubic root of 122897240 is about 497.1804501642.

The spelling of 122897240 in words is "one hundred twenty-two million, eight hundred ninety-seven thousand, two hundred forty".